Follow the money - who owns the carbon credit companies - we know Al Gore is heavily invested in the primary one - so, let's see, companies and cities have to pay Al Gore for the trumped up Global warming. And, who is the biggest spokesperson for global warming alarmists, Al Gore. Wow, could not be any hint of conflict of interest in that deal. Now, can the carbon credit company provide any real proof of contract compliance - well, no, not really. There is no way to prove that planting a certain number of trees one place offset the carbon output at another. Too silly for words.